Compile [clock clicks], [clock microseconds], [clock milliseconds] and [clock seconds].

7 files changed, 174 insertions, 13 deletions

diff --git a/generic/tclAssembly.c b/generic/tclAssembly.c
index f56da8f..120fd9a 100644
--- a/generic/tclAssembly.c
+++ b/generic/tclAssembly.c
@@ -137,6 +137,8 @@ typedef enum TalInstType {
 				 * ranges */
     ASSEM_BOOL,			/* One Boolean operand */
     ASSEM_BOOL_LVT4,		/* One Boolean, one 4-byte LVT ref. */
+    ASSEM_CLOCK_READ,		/* 1-byte unsigned-integer case number, in the
+				 * range 0-3 */
     ASSEM_CONCAT1,		/* 1-byte unsigned-integer operand count, must
 				 * be strictly positive, consumes N, produces
 				 * 1 */
@@ -350,6 +352,7 @@ static const TalInstDesc TalInstructionTable[] = {
     {"bitnot",		ASSEM_1BYTE,	INST_BITNOT,		1,	1},
     {"bitor",		ASSEM_1BYTE,	INST_BITOR,		2,	1},
     {"bitxor",		ASSEM_1BYTE,	INST_BITXOR,		2,	1},
+    {"clockRead",	ASSEM_CLOCK_READ, INST_CLOCK_READ,	0,	1},
     {"concat",		ASSEM_CONCAT1,	INST_STR_CONCAT1,	INT_MIN,1},
     {"concatStk",	ASSEM_LIST,	INST_CONCAT_STK,	INT_MIN,1},
     {"coroName",	ASSEM_1BYTE,	INST_COROUTINE_NAME,	0,	1},
@@ -1363,6 +1366,23 @@ AssembleOneLine(
 	TclEmitInt4(localVar, envPtr);
 	break;
 
+    case ASSEM_CLOCK_READ:
+	if (parsePtr->numWords != 2) {
+	    Tcl_WrongNumArgs(interp, 1, &instNameObj, "imm8");
+	    goto cleanup;
+	}
+	if (GetIntegerOperand(assemEnvPtr, &tokenPtr, &opnd) != TCL_OK) {
+	    goto cleanup;
+	}
+	if (opnd < 0 || opnd > 3) {
+	    Tcl_SetObjResult(interp,
+			     Tcl_NewStringObj("operand must be [0..3]", -1));
+	    Tcl_SetErrorCode(interp, "TCL", "ASSEM", "OPERAND<0,>3", NULL);
+	    goto cleanup;
+	}
+	BBEmitInstInt1(assemEnvPtr, tblIdx, opnd, opnd);
+	break;
+
     case ASSEM_CONCAT1:
 	if (parsePtr->numWords != 2) {
 	    Tcl_WrongNumArgs(interp, 1, &instNameObj, "imm8");
diff --git a/generic/tclClock.c b/generic/tclClock.c
index bb9fbeb..02b2845 100644
--- a/generic/tclClock.c
+++ b/generic/tclClock.c
@@ -208,11 +208,7 @@ struct ClockCommand {
 };
 
 static const struct ClockCommand clockCommands[] = {
-    { "clicks",			ClockClicksObjCmd },
     { "getenv",			ClockGetenvObjCmd },
-    { "microseconds",		ClockMicrosecondsObjCmd },
-    { "milliseconds",		ClockMillisecondsObjCmd },
-    { "seconds",		ClockSecondsObjCmd },
     { "Oldscan",		TclClockOldscanObjCmd },
     { "ConvertLocalToUTC",	ClockConvertlocaltoutcObjCmd },
     { "GetDateFields",		ClockGetdatefieldsObjCmd },
@@ -256,14 +252,14 @@ TclClockInit(
     /* Structure of the 'clock' ensemble */
 
     static const EnsembleImplMap clockImplMap[] = {
-	{"add",          NULL, TclCompileBasicMin1ArgCmd, NULL, NULL, 0},
-	{"clicks",       NULL, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
-	{"format",       NULL, TclCompileBasicMin1ArgCmd, NULL, NULL, 0},
-	{"microseconds", NULL, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
-	{"milliseconds", NULL, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
-	{"scan",         NULL, TclCompileBasicMin1ArgCmd, NULL, NULL, 0},
-	{"seconds",      NULL, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
-	{NULL,           NULL, NULL,                      NULL, NULL, 0}
+	{"add",          NULL,                    TclCompileBasicMin1ArgCmd, NULL, NULL,       0},
+	{"clicks",       ClockClicksObjCmd,       TclCompileClockClicksCmd,  NULL, NULL,       0},
+	{"format",       NULL,                    TclCompileBasicMin1ArgCmd, NULL, NULL,       0},
+	{"microseconds", ClockMicrosecondsObjCmd, TclCompileClockReadingCmd, NULL, INT2PTR(1), 0},
+	{"milliseconds", ClockMillisecondsObjCmd, TclCompileClockReadingCmd, NULL, INT2PTR(2), 0},
+	{"scan",         NULL,                    TclCompileBasicMin1ArgCmd, NULL, NULL      , 0},
+	{"seconds",      ClockSecondsObjCmd,      TclCompileClockReadingCmd, NULL, INT2PTR(3), 0},
+	{NULL,           NULL,                    NULL,                      NULL, NULL,       0}
     };
 
     /*
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index 7dba232..635447c 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -734,6 +734,105 @@ TclCompileCatchCmd(
     return TCL_OK;
 }
 
+/*----------------------------------------------------------------------
+ *
+ * TclCompileClockClicksCmd --
+ *
+ *	Procedure called to compile the "tcl::clock::clicks" command.
+ *
+ * Results:
+ *	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ *	evaluation to run time.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "clock clicks"
+ *	command at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileClockClicksCmd(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token* tokenPtr;
+
+    switch (parsePtr->numWords) {
+    case 1:
+	/*
+	 * No args
+	 */
+	TclEmitInstInt1(INST_CLOCK_READ, 0, envPtr);
+	break;
+    case 2:
+	/*
+	 * -milliseconds or -microseconds
+	 */
+	tokenPtr = TokenAfter(parsePtr->tokenPtr);
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD
+	    || tokenPtr[1].size < 4
+	    || tokenPtr[1].size > 13) {
+	    return TCL_ERROR;
+	} else if (!strncmp(tokenPtr[1].start, "-microseconds", 
+			    tokenPtr[1].size)) {
+	    TclEmitInstInt1(INST_CLOCK_READ, 1, envPtr);
+	    break;
+	} else if (!strncmp(tokenPtr[1].start, "-milliseconds", 
+			    tokenPtr[1].size)) {
+	    TclEmitInstInt1(INST_CLOCK_READ, 2, envPtr);
+	    break;
+	} else {
+	    return TCL_ERROR;
+	}
+    default:
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+
+/*----------------------------------------------------------------------
+ *
+ * TclCompileClockReadingCmd --
+ *
+ *	Procedure called to compile the "tcl::clock::microseconds",
+ *	"tcl::clock::milliseconds" and "tcl::clock::seconds" commands.
+ *
+ * Results:
+ *	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ *	evaluation to run time.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "clock clicks"
+ *	command at runtime.
+ *
+ * Client data is 1 for microseconds, 2 for milliseconds, 3 for seconds.
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileClockReadingCmd(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    if (parsePtr->numWords != 1) {
+	return TCL_ERROR;
+    }
+
+    TclEmitInstInt1(INST_CLOCK_READ, PTR2INT(cmdPtr->objClientData), envPtr);
+
+    return TCL_OK;
+}
+
 /*
  *----------------------------------------------------------------------
  *
diff --git a/generic/tclCompile.c b/generic/tclCompile.c
index f6b3c52..f716195 100644
--- a/generic/tclCompile.c
+++ b/generic/tclCompile.c
@@ -654,6 +654,11 @@ InstructionDesc const tclInstructionTable[] = {
 	/* Lappend list to general variable.
 	 * Stack:  ... varName list => ... listVarContents */
 
+    {"clockRead",	 2,	+1,	1,	{OPERAND_UINT1}},
+        /* Read clock out to the stack. Operand is which clock to read
+	 * 0=clicks, 1=microseconds, 2=milliseconds, 3=seconds.
+	 * Stack: ... => ... time */
+
     {NULL, 0, 0, 0, {OPERAND_NONE}}
 };
 
diff --git a/generic/tclCompile.h b/generic/tclCompile.h
index ba6ad44..e5d026c 100644
--- a/generic/tclCompile.h
+++ b/generic/tclCompile.h
@@ -821,8 +821,10 @@ typedef struct ByteCode {
 #define INST_LAPPEND_LIST_ARRAY_STK	187
 #define INST_LAPPEND_LIST_STK		188
 
+#define INST_CLOCK_READ			189
+
 /* The last opcode */
-#define LAST_INST_OPCODE		188
+#define LAST_INST_OPCODE		189
 
 /*
  * Table describing the Tcl bytecode instructions: their name (for displaying
diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index 1d3a825..4250958 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -7840,6 +7840,39 @@ TEBCresume(
      * -----------------------------------------------------------------
      */
 
+    case INST_CLOCK_READ:
+	{			/* Read the wall clock */
+	    Tcl_WideInt wval;
+	    Tcl_Time now;
+	    switch(TclGetUInt1AtPtr(pc+1)) {
+	    case 0:		/* clicks */ 
+#ifdef TCL_WIDE_CLICKS
+		wval = TclpGetWideClicks();
+#else
+		wval = (Tcl_WideInt) TclpGetClicks();
+#endif
+		break;
+	    case 1:		/* microseconds */
+		Tcl_GetTime(&now);
+		wval = (Tcl_WideInt) now.sec * 1000000 + now.usec;
+		break;
+	    case 2:		/* milliseconds */
+		Tcl_GetTime(&now);
+		wval = (Tcl_WideInt) now.sec * 1000 + now.usec / 1000;
+		break;
+	    case 3:		/* seconds */
+		Tcl_GetTime(&now);
+		wval = (Tcl_WideInt) now.sec;
+		break;
+	    default:
+		Tcl_Panic("clockRead instruction with unknown clock#");
+	    }
+	    /* TclNewWideObj(objResultPtr, wval); doesn't exist */
+	    objResultPtr = Tcl_NewWideIntObj(wval);
+	    TRACE_WITH_OBJ(("=> "), objResultPtr);
+	    NEXT_INST_F(2, 0, 1);
+	}
+
     default:
 	Tcl_Panic("TclNRExecuteByteCode: unrecognized opCode %u", *pc);
     } /* end of switch on opCode */
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 3749735..1deda3c 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -3478,6 +3478,12 @@ MODULE_SCOPE int	TclCompileBreakCmd(Tcl_Interp *interp,
 MODULE_SCOPE int	TclCompileCatchCmd(Tcl_Interp *interp,
 			    Tcl_Parse *parsePtr, Command *cmdPtr,
 			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileClockClicksCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileClockReadingCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
 MODULE_SCOPE int	TclCompileConcatCmd(Tcl_Interp *interp,
 			    Tcl_Parse *parsePtr, Command *cmdPtr,
 			    struct CompileEnv *envPtr);